[ncl-talk] "sum" and "avg" functions without ignoring missing values

[Rashed Mahmood]

Hi Richard,
No, that is not my question. The question is that when one value is missing
and the other one is not missing then the "sum" or avg function would
return a valid number but I wonder if they could return a missing instead.
the print statement in previous email summarizes this where c has all
missing when the values simply added while same thing using function would
return valid numbers, since function is supposed to ignore missing value.
This I think would require changes to the code but just thought may be
there is a work around.

thanks for the email, anyway.
Rashed


On Thu, Nov 23, 2017 at 8:59 PM, music piano <musicpianoljy at gmail.com>
wrote:

> Hi, Rashed
>
> I am not sure I understand your question.
>
> You can assign a at _FillValue to a different value, then the function will
> recognize -9.0
>
> Best
> Richard
>
> On Thu, Nov 23, 2017 at 7:49 PM, Rashed Mahmood <rashidcomsis at gmail.com>
> wrote:
>
>> Hello all,
>> I am just wondering if there is an easy way to tell the "sum" and "avg"
>> functions NOT ignore the missing values. Below lines clarify my question
>> where I would like to see same values for c and d:
>>
>> ncl 0> a = (/(/-9.,2,-9./),(/1,-9.,2./)/)
>> ncl 1> a at _FillValue = -9.
>> ncl 2> c = (a(0,:)+a(1,:))
>> ncl 3> d = dim_sum_n(a,0)
>> ncl 4> print("  "+c+ " ... "+d)
>> (0)       -9 ... 1
>> (1)       -9 ... 2
>> (2)       -9 ... 2
>>
>> Thanks,
>> Rashed
>>
>>
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